Neither PSW Restart nor Snapdump works very well when under time pressures to get a system back up. The larger the system, the less well they work.
As it now stands, this was a one-time occurrence (first time in my 32 years of working with VM). Since the state of the system was unknown, I think that Restart is preferable to SNAPDUMP, should it happen again. Thanks, Richard -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Marcy Cortes Sent: Wednesday, November 15, 2006 4:10 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: IPL Strangeness snapdump works well too, when your system is still alive. Especially useful when you are far far from the HMC. Marcy Cortes This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Brian Nielsen Sent: Wednesday, November 15, 2006 14:11 To: IBMVM@LISTSERV.UARK.EDU Subject: Re: [IBMVM] IPL Strangeness And I just did a PSW restart yesterday because I needed to IPL to fix a = severe performance problem and wanted a dump of the system. For some reason CP was spending enormous amounts of time doing instructio= n simulation that seemed to be triggered by the virtual machines involved i= n collecting the monitor data. I don't yet know definitively what happened. The T/V ratio for several CMS machines skyrocketed, but not so= for the Linux guests. Unfortunately, I took the dump after terminating the servers in question = so it's probably of little use. Brian Nielsen On Wed, 15 Nov 2006 16:08:09 -0500, David Kreuter <[EMAIL PROTECTED] resources.com> wrote: >PSW restart (system restart function from the HMC) indeed still lives on= and works brilliantly. Just did one last week - for fun and practice. Still results in a SVC002 abend code. Then read the dump with VMDUMPTL = after DUMPLOAD processing. > >David >>-----Original Message----- >>From: The IBM z/VM Operating System on behalf of George Haddad >>Sent: Wed 11/15/2006 4:01 PM >>To: IBMVM@LISTSERV.UARK.EDU >>Subject: Re: [IBMVM] IPL Strangeness >> >>If it does re-occur, maybe you can do a PSW-restart to get a dump >>(assuming that's still an option in the newer VMs) > >========================= ========================== =======================
